Calamotropha delatalis, is a moth in the family Crambidae. It was described by Francis Walker in 1863. It is found in Sri Lanka[1] and Australia,[2] where it has been recorded from Queensland, New South Wales and Victoria.
The wingspan is about 27 mm in the male and 30 mm in the female. It is a pale greyish-brown moth. The vertex of the head is whitish. Forewings with veins and interspaces finely streaked with brown. A black discocellular speck and a marginal brown specks series present. Hindwings fuscous brown.[3]
The larvae probably bore into the stems of grass species.[4]
. George Hampson . 1896 . The Fauna of British India, Including Ceylon and Burma: Moths Volume IV . Taylor and Francis . Biodiversity Heritage Library.